In order to ensure the excellent quality of our products, SYI owns the complete testing & inspection instruments. From the raw materials to finished products, our QA departments inspect every single step. We have following inspecting instruments: Metallurgical Microscope, Figure(Roughness & Contour) Measure Instrument, Roundness and Cylindricity Tester, Parellism and Perpendicularity measurements Micro-hite 900, Hardness tester, Bearing Vibration Tester, Bearing Lifespan Tester, High-Speed Balance Tester. The entire instrument is calibrated & maintained by Taiwan CNS system. All the manufacturing processes are under strict inspection and monitor; SYI can backtrck any bearing data if so required by our customers.